Describes the cause and action for error messages.
Error Message(English)：
push invalid username or password
SANS HHC 2015 ? Mercked Security
https://www.merckedsecurity.com/sans-holiday-hack-challenge-2015
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https://mike-boya.github.io/post/sans-holiday-challenge-2015-writeup/
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https://itunsecurity.wordpress.com/2015/12/23/2015-sans-holliday-hack-challenge-writeup-walkthrough/・・・
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https://itunsecurity.wordpress.com/
All Your Base Are Belong To Me ? SANS Christmas Challenge 2015
https://allyourbase.utouch.fr/posts/2016/01/09/sans-christmas-challenge-2015/